ABB ACS150 series User Manual page 121

120
Parameters in the Long parameter mode
Index Name/Selection
4004 PID DERIV FILTER
0.0...10.0 s
4005 ERROR VALUE INV
0 = NO
1 = YES
4006 UNITS
0...12
4007 UNIT SCALE
0...4
4008 0% VALUE
x...x
4009 100% VALUE
x...x
4010 SET POINT SEL
0 = KEYPAD
1 = AI1
2 = POT
Actual signals and parameters
Description
Defines the filter time constant for the derivative part of the process PID
controller. Increasing the filter time smooths the derivative and reduces
noise.
Filter time constant. If parameter value is set to zero, the derivative filter is
disabled.
Selects the relationship between the feedback signal and drive speed (drive
output frequency).
Normal: A decrease in feedback signal increases drive speed (drive output
frequency). Error = Ref - Fbk
Inverted: A decrease in feedback signal decreases drive speed (drive output
frequency). Error = Fbk - Ref
Selects the unit for PID controller actual values.
OUTPUT1 UNIT selections 0...12 (NO UNIT...mV).
See parameter 3405
Defines the decimal point location for the display parameter selected by
parameter 4006 UNITS.
Example PI (3.14159)
4007 value Entry
0 00003
1 00031
2 00314
3 03142
4 31416
Defines together with parameter
the PID controller's actual values.
Units (4006)
Scale (4007)
4009
4008
0%
-1000%
Unit and range depend on the unit and scale defined by parameters
UNITS and 4007 UNIT SCALE.
Defines together with parameter
PID controller's actual values.
Unit and range depend on the unit and scale defined by parameters
UNITS and 4007 UNIT SCALE.
Selects the source for the process PID controller reference signal.
Control panel
Analog input AI1
Potentiometer
Display
3
3.1
3.14
3.142
3.1416
4009 100% VALUE the scaling applied to
+1000%
Internal scale (%)
100%
4008 0% VALUE the scaling applied to the
Def
1.0 s
0 = NO
4 = %
1
0
4006
100
4006
2 = POT